i_need_answers
Newbie
Posts: 2
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« on: May 28, 2011, 04:15:07 AM » |
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HW31: If the atmosphere were 50 times thicker than it now is, the sun would appear
blue-violet.
orange-green.
red-orange.
green-blue.
none of the above
5.HW31: Clouds are white because water molecules
are white.
absorb white light.
reflect white light.
of different sizes form clusters, scattering different colors of light.
none of the above
5.HW31: When a sample of an element is heated until it glows, the color it gives off is
a continuous band of color.
a composite of many frequencies of light.
a single frequency of light.
5.HW31: The colors of light emitted by incandescent gases show the
absorbing qualities of gas.
polarization of atoms in the gas.
relative masses of atoms in the gas.
identities of atoms in the gas.
5.HW31: Spectral lines in a line spectrum take the shape of lines because the
atoms that emit the light vibrate along parallel lines.
light emitted aligns with the gravitational field.
slit of the spectroscope is itself a line opening.
light is polarized.
5.HW31: The three primary colors of light for additive color mixing are_____.
red, green, and blue.
yellow, green, and blue.
red, yellow, and blue.
red, yellow, and green.
yellow, cyan, and red.
5.HW31: When red and blue light shine on a white sheet, the resulting color is
yellow.
blue.
cyan.
green.
magenta.
5.HW31: Material in an object that selectively absorbs colored light is called a pigment.
True
False
5.HW31: The sky is blue because air molecules absorb blue light.
True
False
5.HW31: A spectroscope is an instrument that analyzes the colors in a light beam.
True
False
5.HW31: Some electrons in atoms vibrate at a characteristic frequency that produces white light.
True
False
5.HW31: If an object were completely black, you wouldn't be able to see it directly.
True
False
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